Layer-locked anomalous valley hall effect in two-dimensional tetragonal trilayers with electrically controllable valley and spin polarizations

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Even without widespread productivity gains, AI is drastically reshaping capital expenditure. The “hyperscalers”—the massive tech companies providing cloud and AI infrastructure—are driving an unprecedented spending boom. Analysts have revised their 2026 capex expectations for these tech giants to an astonishing $667 billion, a 24% increase from just the start of the earnings season and representing a 62% jump compared with 2025. Goldman Sachs anticipates that this AI spending will contribute roughly 1.5 percentage points to measured capex growth this year, though its net impact on overall GDP growth will be a minimal 0.1 to 0.2 percentage points owing to a heavy reliance on imported capital goods.

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中日關係再緊張:日本出招與那國島標誌防衛重心轉移,中國升級出口管制成效幾何

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为80岁母亲手机设三重“防骗墙”失效,“技术男”把亲身经历告诉大家引以为戒